Mechanism control



Dec. 16, 1941.

C. s. MccARTHY MEcHANIsM coNTnoL Filed Dec. 4, 1939 3 Sheets-.Sheet 1 INVENToR Char/es 5. McCar/y ATTORNEY .De 16, 1941--- y c. s. MccARTHY 2,26,058

MECHANISM CONTROL A 3 Sheets-Sheet 2 Filed Dec. 4, 1939 1m MM D 16, 1941* c. `s. MccAR1-HY 2,266,058 l MEcHANIsM coNTRQL Filed Dec. -4, 1959 5 sheets-sheet s Patented Dec. 16, 1941 UNITED stares 2,266,058 MECHANISM CONTROL Charles S. lfIcCarthy, Toledo, Ohio, assigner to The Bingham Stamping Company, a corpora- `tion of Ohio ATENT .OFFICE l 19 Claims.

This invention relates to mechanism actuators or controls and more particularly to an arrangement for actuating or controlling braking mechanism of an automotive vehicle. l

The invention has for an object the provision of control mechanism embodying a novel force multiplying means of simple construction for eiectiveiy actuating Yor controlling brakes of a vehicle. I y

The invention includes the provision of mechanism which may be actuated by direct pull upon a manipulating member in combination with force multiplying means for transmitting motion of the manipulating member to the brakingmechanism. t

Another object of the invention is to provide a mechanism actuating arrangement having force multiplying arrangement coupled with relatively stationary lock or clutch releasablefby means independent of the mechanism actuating means.

VThe invention is also inclusive of a brake manipulating device of the direct pull type embodying means for multiplying the force applied by the operator without the interposition of pivotally supported levers so that 4a much greater force is transmitted to the braking mechanism of the vehicle than is exerted byj the operator.

VStill another object of the invention is the provision of a simple yet effective force multiplying means wherein movement of one ofv the kelements is transmitted to anotherelement movable in the same 'direction at a differential Vspeed whereby the effective force is increased iin application to the other element.

Still affurther object of the invention is to provide a brake controlling mechanism rwherein the elements are adapted for movement in yparallel directions and are adapted to be conveniently positioned Lwith respect to the operator as adjacent the -instrument panel of the vehicle, the arrangement having a clutch releasing means Within ccnvenientreach of the operator.

A'further object of the invention is to provide a simpli-ed control means especially adapted for actuating and controlling braking mechanism wherein the major elements areformed of sheet metal, thus facilitating the ease of manufacture, assembly, and interchangeability of the parts, aswell as-eifectingsubstantialreductions in the cost oi'control mechanism. Y

YFurther objects and advantages'are within the scope of this invention such as'relate to the arrangement, operation and function of the related elements of the structure, to various details of construction and to combinations of parts, elements per seand to economies of manufacture and numerous other features as will ber apparent from a consideration of the specication and drawings ofa form of the invention, which may be preferredin which: A Figure 1 is a fragmentary sectional View of va portioncf the operators compartment of a vehicleillustrating a form of my invention and a method of utilization oi the same in'actuating the emergency brakes or a vehicle; Figure .2 is a top plan view of a form of my invention; Y

Figure 3 is a side elevational view of `the arrangement shown inFigure 2;

Figure 4 is a transverse sectional view vtaken substantially on the'line 4-4 of ,Figure 2;

Figure 5 is aside elevational view of one `of the elements o'i the mechanism `control of my invention;

Figure 6 is an end elevational view ofthe element shown in Figure 5; l

' Figure '7 is a transverse sectional View taken substantially onlth-e line 'l-l yof Figure 2;

Figure 8 is a transverse sectional view taken substantially on the line 8-8 of Figure 2;

Figure 9 is a fragmentarysectional View taken substantially on the line-9 9 of Figure 8;

Figure 10 is a top plan yview showing a modified form of my invention;

Figure 1l is a side elevational View of the arrangement of the invention illustrated in vFigure 10;

Figure `l2 is a sectional view taken substantially on the line l2-l2 of Figure ll;

VFigure 13 is a sectional view taken substantially on the line |3-l3 of Figure 11;

Figure 14 is a sectional -view taken substantially onrthe line Ill-lll of Figure l1;

Figure 15 is a sectional View throughthelocking means taken substantially on the line l 5-15 of Figure 1l.

While I have shown the arrangement of my invention as utilized for actuating or controlling the brakes of an automotive vehicle, it is to be understood that I contemplate the use of my invention with any mechanism wherever the same may be found to have utility.

Referring particularly to Figure l of the drawings, there is illustrated a'porton of an automotive vehicle including a cowl portion I0, wind shield Il, dash board I2, instrument panel I4, steering Wheel l5, the vehicle body being supported upon a frame structure I6. There is also provided a brake cross shaft I8 journalled in a bracket I9 to the shaft supporting a service brake pedal 28, a bell crank member 2|, the latter being connected by means of a rod 22 to the brake mechanism (not shown). Also carried by the shaft I8 is a crank member 24 having a pin 25 operating in a slot 26 in member 21, the latter being connected by means of a cable 28 to a clevis 30 which in turn is connected to the mechanism actuator or control of my invention,

which will be hereinafter explained in detail.

'I'he cable 28 is suitably guided within a sheath 3| to prevent kinking of the brake actuating cable. The member 21 is also connected to a spring 32 which is anchored. tothe frame or other suitable portion of the vehicle as at-33 tending to urge the cable and associated mechanism toward brake released position. The p in 25 in slot 28 permits the brakes to be set by means of pedal 28 without interfering with-the operation of the brake control mechanism of my invention.

With particular reference to Figures 1v to 9 inclusive, illustrating one form of my invention wherein a member or support 35 is provided with a portion 36 secured to the dash board |2 by means of bolt `31. The rear extremity of member 35 is secured through ear portions 34 to the instrument panel I4 by suitable means as, for example, bolts 38. As will be apparent from Figure 4, member 35 is formed with a longitudinal V-shaped `depression in which is slidably mounted a manipulating bar 40, the latter having a handle 4| secured to the extremity thereof projecting through instrument panel I4. The portion 42 of member 35 adjacent the instrument panel is of channel conguration as illustrated in Figure 8, the bight portion of the channel serving to form a guide for the bar 40.

Secured to the forward end of the bar 40 is a plate 43 having a centrally raised portion 44 of V-shaped cross section to receive and accommodateV the end of barili), the bar and plate being secured together by suitable means as, for example, screws 45. Positioned beneath plate 43 is a second plate 46 having upwardly projecting ear portions 41 which project into notches in plate 43 and serve to hold the plates in proper relation, the plates 43 and 46 forming a carriage. The plates areprovided with aligned openings throughV which project stub shafts v49 and mounted between the plates of the carriage and xedly secured to the stub shafts through the medium of flattened portions 50 on said shafts are `sets of toothed wheels or gears, there being in each set a large gear and a smaller gear 52. The openings in the gears 5| and 52 to admit the stub shafts 49 are of a corresponding shape to the stub shaft so that rotary movement of gears 5| is transferred to the smaller gears 52. The longitudinal edges of the support or member 35 are toothed to form racks 48 which are in mesh respectively with each of the larger gears 5|. Positioned immediately beneath member 35 is a member 53 which is wider than member 35 and has upon its longitudinally extending edges toothed formation or racks 54 which are in mesh respectively with each of the smaller gears 52. As particularly shown in Figure 6, member 53 is provided with a V-shaped central portion 55 which coincides with and is slidable along the V-shaped central section of member 35, the relation of manipulating bar 40 and members 35 and 53 being illustrated in Figure 4. Member 53 is preferably formed of sheet metal and has upwardly and laterally extending portions or fingers 56 which take over the edges of bar 35 to hold the bars 35 and 53 in proper slidable relationship, member 53 being also provided with a depending ear portion 51 which is welded or otherwise secured to member 53 as at 58, member 51 having an opening 59 adapted to receive a clevis pin 60 which pivotally connects clevis 30 to member 51. The cable 28 may be secured to the clevis by means of collar 6| connected to the end of the cable as illustrated in Figure 3.

It should be noted that the difference in pitch diameter between gears 5| and the smaller gears 52 with respect to the pitch diameters of the larger gears 5| determine the differential of movement between the members 35 and 53 when the handle member 4| is moved carrying with it bar 40 and the carriage consisting of plates 43 and 46 and gearing associated therewith. Thus, in the embodiment illustrated, the pitch diameters of -smaller gears 52 is one-fourth smaller than the pitch diameter of the larger gears 5| and hence .the -ratio of relative movement between bar 40 and member 53 is in the relation of 1 to 4. Thus, when bar 40 is moved to the right as viewed in Figure 2, carrying with it the carriage formed by plates 43 and 46 with the larger gears 5| in mesh with the racks `48 of the relatively stationary member 35, the gears are caused to rotate and due to the dilference in the pitch diameters between the gears of each set, member 53 will be moved in the same direction of movement of member 40 but through a lesser distance in the ratio of 1 to 4, that is, if bar 48 is moved a distance of four inches, member 53 will be moved only one inch, but the force acting to move member 53 is multiplied four times. Thus, any ratio of difference in movements between bar 48 and member 53 may be obtained by changing the ratio between the pitch diameters of gears 5| as compared with gears 52. For example, if the difference in pitch diameters between gears 5| and 52 is one-eighth, then if bar 40 is moved through a distance of eight inches, member 53 will be moved through a distance of only one inch, and the force applied to handle 4| to move bar 40 will be multiplied to member 51 for exerting pull on the cable 28 to the extent of ratio of difference in movements between members 35 and A53. Thus, if the difference in movement is 1 to 4, and twenty pounds of force applied to handle 4| to withdraw bar 48 toward the right hand direction as viewed in Figure 2, the force is multiplied to the extent of four times this amount or eighty pounds applied through member 51 and clevis 30 as a pull upon cable 28 connected to the braking mechanism. This gearing system forms a motion translating means whereby a change in amplitude of force and movable elements.

I have provided locking means for effecting a locking of the bar 40 in brake setting position, whichlocking means is relatively stationary with respect to bar 4U. In the embodiment illustrated and particularly Figure 2, 3, 8 and 9, there is positioned between the side walls and 66 of member 42 a bracket 61 having ear portions 69 which project into slots 19 formed in side walls 65and 66 to position the bracket in the support, the bracket having a surface 68 angularly disposed with respect to the direction of movement of bar 40. Positioned between an exterior surface of bar 40 and the angular surface 68 of bracket 51 is a clutch or locking roller 10 having tenon portions 1| and 12 which project through motion is eifected between the Clearance Slots T3 in Aside Walls Y65 and o6 Oflortion 42, the tenons 'eXteidng into slots 14 f'or'ed in portions 15 and 16 above bracket '61'. Inorder to facilitate assembly of the clutch roller Vin its 'proper position, the clearance 'slots 13, which are of a dlerrson t accommodate tenori portions 17| and 12 of the clutch roller, terniina'te in enlarged circular openings 19 in thefw'alls |55 and 6E so 'as to permit the insertion ofthe clutch r'oller in 'portion 42 oi member 35. rI'he portions 15 and 'I6-of leVr -melilber 11 aeplvtally joined to lthe side walls B and BB 'andmernber "61 by means of a rivet or shaft 18, as particularly shown in Figures 8 and 9.. The upper portion 'oilever member 'I1 is provided Wthan opening TSU through Which projects a transversely eid/ending portion 8| of a member 82, the latter 'extending through an opening in the instrument panel `|`4 and having a Small button ''r manipulating portion 83 connected thereto. The portion 8| is retained within th'e opening in VI'n'ernljer 11 by nieans "of a Cotter key 84. 'On 'member 8'2 is a washer 85 forming a stop means and interposed between the instrument panel I4 and the washer and surrounding bar '82 is an epansivecoil 'spring '86 which 'serves through member 11 'to urge the clutch or roller 10 toward locking o'r clutching position as indicated in Figure 9 between 'a lower surface of bar '4D 'and the angularly disposed 'surface 68 of bracket 61. when bar 40 is withdrawn ina direction 'awa'y from the instrunient panel -'I4 through the manipulation of handle 4 I1, the 'clutch roller 1U overruns along the'surface of bar un, but as soon as movement in a right hand 'direction of b'ar 4Q `as viewed inligll'r '2' C'ea'S'eS, thel cllltcl'iA roller 'Ill `is instantly urged under the influence 'of spring '8B towards wedging or locking 'position between the angularly disposed, surface 68 and a lower lsurlacelo'f bar 4B, thus holding'the cable 28 in brake setting position, the latter having been movedto the right as viewed in Figure '3 through 'the dilierential actuating means 'in'cluding'the racks 48 andA 54 and sets of gears 5| and '52.

`When it is desired to release the brakes 'or to release the vclutch which holds b'ar '49 in brake setting position, it is only necessary for theoperato'r to grasp the button 83 and'mov'e'the saine away from the instrument panel I4. This move# ment causes member '83 to oscillate member '1I` about shaft 18 t'o move th'e`clutc'h o'r roller 10 out of wedging engagement between b'ar 40 `and the angularly disposed surface 68 'as shown 'in Figure 9, 'and under 'the iniiuenc'e `of the'spr'ing 32 connected to cable 28 as wella'sthehormal pull of the brakes toward'released position, bar '4I will be moved to the left as viewed in r'lig'ure 2 until the elements of the mechanism 'reach the position illustrated in this ligure with 'the handle 4I adjacent the instrument panel. Thus, with the arrangement of my invention, it is to'be noted that the clutch means is relatively stationary with respect to the `brake 'actuating or applying means in the form of bar 48, member 53 and associated elements so that the Vcliitchreleasing mechanism inthe form of button '83 and member 11 are 'operated independently Vof the brake applying manipulating handle A'4| so that release of the brakes may not be inadverently effected, and release thereof cannot be ef fect'e'd exceptthroug'h'movement 'of 'the clutch releasing means independent' of 'bar '4E andhandle 4|. This is a safety feature in 'that handle 4l may not be moved inwardly 'to repasa the brakes until the bar '4 0 has been released by independent movement of the clutch releasing button a3. y

e A modified forno of ny invention ls illustrated in Figures l0 through 1 5 inclusive 'wherein there is projecting rearwardly e from the instrument panel I4' an elongated member yIllll having 'a cross sectional configuration as illustrated f in Figure l2 except that portion adjacent the in'- strument panel wherein the configuration is generally Clsh'aped as illustrated in Figur'el, mein'- be'r Iil having ear portions |08, secured to the instr'urnentpanel by means of bolts Ill'9. The

member itil has an upper wall IUI immediately beneath which is positioned a bar |02 which sli'dable within nember Iii and is provided at the extremity thereof projecting through thevins'tru` ment panel I'4 with a suitable manipulating handle |03. The forward extremity of bar |502 is recessed at either side to accommodate parallel plates I |34 and It which are rivetedV as at [06 to bar |02 or otherwise secured thereto. The plates are provided lwith aligned openings land serve to journ'ally support a transversely extending 'stub shaft |01 which has a vportion projecting eXteriorl'y of plate |65 and t'o which is flireflly secured a 'gear IIE, the latter adapted for en"- meshinent lwith Ya longitudinally extending toothed or rack portion 'I I V| formed on "an 'up'- wardly projecting wall I`I2 of member 169-. Also iiXedl'y secured 'tofsh'a'ft I|J1 is a second gear H4 of a 'lesser diameter thang'earI It, 'the 'gear ||4 being positioned between the plates ||l4 and |045 and is enmeshed with a 'rack or 'toothed portion H5 formed on the upper 'edge of 'a arawbarjor member I I6 'which is provided With a depending portion ||1. The latter is Y:formed to r'e'celve a cle'vis I I 8' connected to the member |I1 by means of a clevis pin II 9, the clevis I I8 bein'g'connected to the brake actuating' cable |28 'as 'illustrated in Figure ll. It is to be noted'that the bar IIB is longitudinally slidable in 'the lower portion 'of' member |00. `The rarm'o'st portion vof bar -I I'S` is provided with a second depending lportionV "|21v through which projects a suitable shaft |22, the latter carrying comparatively small rollers |23' which during the'slidable 'movement of ba'r IIS may contact the lower surface of the horizontal portion |24 of member |60 to prevent binding'of the drawbar.

r`li'heside walls of member Ibo near the instrument'panel I4 are `provided with aligned'openings to receive a headed pivot pin and jour-- nalledupon'pivot pin IS is a U-shaped bracket I3I. The side wallsof the upper portion of bracket I 3| are brought together as at |32 andV are provided withaligned openings to receive and accommodate the'extremity |33 of `a bar |34-, the latter` having aportion extending through an opening in the instrument panel I4 and provided with amanipulating button or member |35.

Positioned within vlthe lowerU-shaped configuration of member |06 and at the end, thereof adjacent the vehicle instrument panel I4 is a member or bracket |31 which has a surface |38 angularly arranged with respect to the lower surface of the manipulating bar |02. The bracket |31 is heldin place by means of pin |353 and projections ISS passing through openings in the bottom wall |24 of member Hill. Ihterposed between the lower surfacehof the manipulating YbarrIlZ. and the angularly disposed'surface' |38 ofmember |31 is a clutch or *roller |48 provided with tenori portions "IlI one of 'which projects th l gh clearance opening |43 in onesi'de'w'all ofinenber |00, the tenons being received in slots or recesses' through the medium of a contractile spring |47,

one end of which is secured to a raised or hooklike portion |48 formed integrally of member |00,

the other extremity of the spring being hooked through an opening in portion |33 of bar |34, the spring tending to urge the member |3| in a counter-clockwise direction about the shaft |30 as viewed in Figure 1l. The portion of the spring being hooked through an opening in portion |33 serves to prevent disengagement of bar |34 with member |3|. The surface |318 makes with the lower surface of bar |02 an included angle of less than 11 degrees, i. e., a wedging angle so that the clutch roller |40 will serve to hold the bar |02 in locked or brake setting position.

In the operation of this form of the invention,

when it is desired to set the brakes of the vehicle, the operator grasps the handle |03 withdrawing bar |02 along member |00 and through the medium of the gears and ||4 a differential movement of drawbar ||6 is eiected in the same direction of movement as bar |02 but through a lesserdistance. The difference in travel between the manipulating member-l 02 and the drawbar ||6 and consequently the diierence in the amount of force exerted is dependent upon the difference in the pitch diameters of the gears ||0 and 4 bears to the pitch diameter of the larger gear. In the embodiment illustrated, this difference in pitch diameters of the gears is Onefourth of the pitch diameter of the larger` gear so that when the bar |02 is pulled outwardly a distance of four inches the drawbar |6 and consequently the cable |20, clevis ||8 and portion ofthe drawbar are moved through a dis` tance of one inch, while the force effective to exert a pull upon cable connected to the brakes (not shown) is four times the pull or force exerted upon the manipulating bar |02. When bar |02 has been withdrawn to a position effecting the setting of the brakes, the clutch roller |40 acting under the inuence of the spring |41 serves to lock the manipulating member |02 in brake setting position and effects a locking of the drawbar ||6 and associated mechanism in brake setting position. When it is desired to release the brakes, the operator grasps button exerting an outward pull upon bar |34 and as the edges of the side walls oi member |3I are in contact with the tenons 4| of the clutch roller, the clutch roller is moved out of locking engagement between vthe lower surface of bar |02 and the angularly arranged surface |38 so that bar |02 and drawbar ||6 are returned to normal or brake released position under the inuence of a spring of the character of spring 32 (see Figure 1) connected to the braking mechanism tending to urge them toward released position.

In this form of the invention the ratio of force exerted upon bar |02 as transmitted to the drawbar I6 may be varied by changing the pitch diameters of gears ||0 and ||4 so that an innite number of variations in ratios between these members may be had if desired.

It is apparent that within the scope of the invention modications and different arrangements may be made other than is herein disclosed, and the present disclosure is illustrative merely, the invention comprehending'allvariationsthereof.V

1. A mechanism controlncluding a rrelatively stationary support having a toothed sectiony'a manipulating member arranged for slidable movement with respect to said support; a-second member having a toothed section movable relatively to said support and said manipulating member and adapted to be connectedto the mechanism to beactuated; 'motion translating means actuated by the manipulating member coacting with the toothed section ofl said 4support;

and the toothed section of said second mentioned member whereby movement imparted to themanipulating member is transmitted with a change in amplitude to the second mentioned member; means carried by said support coacting with the' manipulating member for locking the same in poe.4 sition; and means mounted adjacent said 'ma nipulatingv member and cooperatively associated with said locking means for rendering the lock-r ing means ineiective. .f

2. A mechanism control including asupporty a manipulating member carried by said support arranged for movement relative thereto; aseo'- ond member carried by said support and adaptedn to be connected to-the mechanism to Lbe actuated; means rotatable with respect to and carried by the manipulating member interposed between said'support and said second mentioned member whereby movement imparted to the ma-v nipulating member is transmitted with a change in amplitude to the second member; and rela: tively stationary clutch means engageablefwith the manipulating member -for locking said meme' bers in position against movement with respect' to said support.-

3. In-a mechanism control a relatively station# ary support; a manipulating member arranged for slidable movement with respect to said sup' port; a second member slidable relatively to said support in a direction parallel with said manipulating member and adapted'to'be connected to the mechanism to be actuated; motion trans: lating means actuated by the manipulatingmem-L ber including rotatable elements interposed between said support and said second mentioned member whereby-movement imparted to themanipulating member is transmitted with a change in amplitude to the second mentioned member; relatively stationary means interposed' between said support and said manipulating member for locking the latter in position; and means cooperatively associated with' said locking meansl for rendering the locking means ineffective.

4. In a mechanism control a support: a member mounted on the support and arranged 'for movement relative thereto and adapted to be connected to the mechanism to be actuated; ro'

tatable motion translating means including elements having different diameters connecting said support and said member; manual operable means for longitudinally moving said motion translating means whereby the movement im parted to said motion translating means is transmitted to said member'at a different rate; relatively stationary clutch means' carried by said support in engagement with the manual operable means for restraining movement of said member in one direction with respect to said support; and means cooperatively associated with Asaid re-4 straining means for releasing thelatter.

5, Ina mechanism'control a relatively stationary support; a manipulating member arranged fiorslidable vmovement with respeetto said support; a second member relatively slidable with respect to said supportlin a direction parallel with said manipulating member; motion translating meansY longitudinally movable by the .manipulating member including rotatable elements interposed between said support and said second mentioned member whereby movement imparted to the manipulating member is trans.- mitted with a change in amplitude to the second mentioned member; relatively stationary supported o ne way clutching means engageable with said manipulating member for restraining Inovement of said members with respect to said sup,- port; and means cooperatively associated with said clutching means for rendering the same ineffective.

6. In a mechanism control a relatively station- Vfiery element; a member arranged for slidable movement relative to said element and adapted to lbe connected to the mechanism to be actuated; motion translating means including rotatable .elements having diierent diameters connecting said element and said member; manual operable means for changing the relative position of said motion translating means with respect to said,

stationary element whereby linear movement nimparted to said motion translating means is transmitted to said member at a differentrate; relatively stationary means including a roller clutch for restraining movement of said member; and means cooperativelylassociated with said movement restraining means for releasing the latter.

f7. A mechanism control including a V-shaped support; a pair of members carried by said support arranged for relative slidable movement in parallel directions with respect thereto; motion translating means carried by one of said vmembers and connected to the other whereby move- .ment imparted to one of said members causes the other to move at a different rate; and a relatively stationary supported clutch means for restraining movement of said members with respect to said support.

8. A mechanism control including a relatively stationary support; a pairof members having slidable movement in parallel directions with respect to said support; gearing movable by one of said members coacting with the other member whereby movement of one of said members causes differential movement of the other of said members; and a relatively stationary roller clutch for restraining movement of said members with respect to said stationary support.

9. A mechanism control including a relatively stationary element; a pair of members arranged for slidable movement in parallel directions with respect to said element; motion translating means including rotatable elements fixed to a common shaft connecting one of said members and said element whereby movement of one of said members causes differential slidable movement of the other of said members with respect to said element; and a relatively stationary roller clutch for restraining movement of said members with respect to said element.

10. In a mechanism controLa relatively stationary support having a toothed portion; a manipulating means arranged for slidable movement with respect to said support; a member slidable on said support and having a toothed portion; a shaft journalled upon said manipurestraining loiioemeons; s reir ofsow .sears of villiers??? spectively efifeois o Voiffelferitiol' movement. of ssio trienio. and relatively steiionory supported Ineens for Iieevement of sois manipulating mean in 911e dtol Y e 11. In a mechanism control, a support having a toothed portion and a longitudinally extending V-shaped channel; a manually operable member slidable in the channel of said support; a Amovable member slidable along `said support and having a toothed portion;` a pair of gears of diiferent diameters meshing respectively with the toothed portions of said support and said member; and relatively stationary means for locking said manually operable member against slidable movement with respect to said support.

l2. A mechanism control comprising, in `combination, a relatively stationary member; a .relatively movable member slidable along said sta.-V tionary member; a manipulating element slidablymounted with respect to said relatively esta tionary member; motion translating means connected to said manipulating element including va pair of rotatable elements ofl different pitch ldiameters having interconnection with. said relatively stationary and movable members whereby movement of said manipulating element is transmitted to said movable member Aat a dif.- ferent rate of speed; relatively stationary sup,- ported locking means for restraining movement of said manipulating element; and means operable independent of said manipulating element for effecting a release of said locking means. 13. A mechanism control comprising, in cornbination, a relatively stationary support; a plurality oi members arranged for slidable movement in the same Adirection with respect 'to `said sup-port; motion translating means sssooated with .said members Where-lov movement of. one of said members is transmitted to the other ofl said members at o iereni wie ,of speed said trops'- lating means including a pair of elements niedly mounted on a rotatable shaft; means including a one-way roller clutch associated with said support and adapted to engage one of said members to lock the said member in predetermined position; and means independent of said members for effecting a release of said locking means.

ll.`A mechanism control comprising, in combination, a relatively stationary support having a toothed rack portion; a member slidable along said support and having a toothed rack portion; a manipulating member arranged for slidable movement with respect to said support; a carriage connected to said .manipulating member; gearing supported upon said carriage and meshing with the rack portions of said 'support and said movable member whereby movement Aof the manipulating member is transmitted to the other member at a different rate of speed; a clutch associated with said support and having engagement with one of said members for locking same in adjusted position; a lever member pivotally connected to said support and having engagement with .said clutch; and manipulating means connected to said lever member for ref-VV ecting a release of said clutch.

15. A mechanism control comprising, in com bination, a relatively stationarysupport .having a rack portion; a member slidable along said sup r port and having a rack portion; a manipulating vandhaving engagement with said manipulating element for locking the latter in adjusted position; a lever member carried by said support `and having engagement with said clutch roller;

resilient means for normallyurging said clutch roller toward clutching position; and manipulating means connected to said lever member for ef- 'fecting a release of said clutch roller.

16. A mechanism control comprising, in combination, a relatively stationary support formed ofl sheet metal and having toothed rack portions formed'upon opposite edges thereof; a drawbar formed of sheet metal slidably arranged with respect to said support and having toothed rack 'portions'formed on itsopposite edges; a carriage 'movable' along said support; a plurality of sets of gears mounted upon said carriage and in mesh with the rack portions of said support and said slidable member whereby movement of said'car- 'riage along said support moves said drawbar Valong said support at a different rate of speed; 'and means for restraining movement of said carriage in adjusted position along said support.

-1'7. A mechanism control comprising, in combination, a relatively stationary support formed of sheetmetal and having toothed rack portions formed upon opposite -edges thereof; a drawbar formed of sheet metal slidably arranged with rezi'eaoss member arrangedfor slidable movement with respect to said support; a carriage connected` to 'said 'manipulating' member; gearing supported uponvsaid carriage and meshing with thev rack `portions of said supportland said movable mem- .'ber; a roller clutch associated with said support "18'. LA; meenemen meercnpfisingiicmf bination, a relatively stationary support forrnedi of sheet metal and having toothed rack portions Yformed upon opposite edges thereof; av drawbar formedA flsheet metalvslidably arrangedhwith respect to'said-support and having toothed rack portions formed on its opposite edges; acarriage movable along'said support; a pluralityof sets of gears mounted upon said carriage and in mesh with'the rack portions of said support and said slidable memberrwhereby movement of said carriage along said support moves said drawbar along said support at a different rate of speed; a manipulating element connected to said carriage; a roller clutch associated with said support and adapted for engagement with said manipulating Velement to hold the Vlatter in adjust` ed position; and means for effecting a release of said clutch.

19. A mechanism control comprising, in combination, a relatively stationary'support formed of sheet metal and having toothed rack portions formed upon opposite edges thereof; a drawbar formed of sheet metal slidably arranged with respect to said support and having toothed rack portions formed on its oppositeedges; acarriage movable along said support; a plurality of sets of gears mounted upon said carriage and in mesh with the rack portions of said support and said slidable member whereby movement of said carriage along said support moves said drawbar along said support at a different rate of speed; a manipulating element connected to said carriag'e; a roller clutch associated With said support and adapted for engagement with said manipulating element to hold the latter in adjusted position; a lever member pivotally supported upon said support and having connection with said roller clutch; means connected to said lever member for manipulating the latter independent of said manipulating element for eiecting a releaseof said clutch; and spring means for normally urging said roller clutch toward clutching position.

l V CHARLES S. MCCARTHY. 

